Earth-boring machine



A. R. MANGNALL AND R F. IRVING.

EARTH BORING MACHINE.

APPLICATION FILED JULY 31.1920.

1 554,054, v PatentedSept. 28, 1920.

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EARTH BORING MACHINE.

APPLICATION FILED JULY 31,1920.

1,354,054, PatentedSept. 28,1920.

4 SHEETS-SHEET 2.

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EARTH BORING MACHINE.

APPLICATION FILED JULY 31.1920.

1,354,054, v PatentedSept. 28,1920.

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EARTH BORING MACHINE.

APPLICATION FILED JULY 31. I920.

Patented Sept. 28, 1920.

4 SHEETS-SHEET 4.

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e@ IIEF LI UNITED STATES PATENT OFFICE.

ARTHUR RIVINGTON MANGNALL, OF CHESTER, AND ROY FORBES IRVING, 0FCLIFTON, BRISTOL, ENGLAND.

EARTH-ROBIN G MACHINE.

Application filed July 31,

T 0 a]? whom-it may concern Be it known that we, ARTHUR RIVINGTON.llIANGNALL, A. M. I. C. E., A. M. I. M. E., a subject of the King ofGreat Britamand Ireland, and residing at 48, l/Vhite Fr1ars, hester, inthe county of Chester, England, and For Forums IRVING, A. M. T. C E., asubject of the King of Great Britaln and Ireland, and residing at 2,Priory Road, lifton, Bristol, in the county of Gloucester, England, haveinvented certain new and useful Improvements in Earth-Boring Machines,of which the following is a spec1fi cation.

This invention relates to earth boring machines of the type in which thebore is produced by the displacement of the earth due to the action of aram or pusher operated by hydraulic or other means.

The object of the present invention is to provide an improvedarrangement of the hydraulic cylinder and its carrying mechanism whichpermits of rapid setting of the cylinder and of the ready andaccurateinsertion into their operative position of the pipes, rods orthe like by which the boring ram is propelled, and which insures thequick displacement of the water from the hydraulic cylinder when a pipe,rod or the like is being placed therein. A further object of thisinvention is to adapt the arrangement aforesaid for use in the rapidwithdrawal of the pipes and boring ram from position after the bore hasbeen produced or for drawing cables, pipes or the like through the bore.

Referring to the accompanying sheet of explanatory drawings Figure 1 isan elevation, and. v

Fig. 2 a plan view of an earth boring machine constructed in oneconvenient form in accordance with this invention.

Fig. 3 is an elevation, and

Fig. i a plan view of the machine arranged for withdrawing the tubes orrods from the bore or for drawing cables, pipes or the like through thelatter.

Figs. 5 to 8 are similar views showing a slightly modified form ofapparatus.

The same reference letters in the different views indicate the sameparts.

The hydraulic cylinder a containing the piston or plunger by which thepipes b for propelling the ram or pusher are driven forward, is providedwith trunnions c which Specification of Letters Patent. Patented Sept,28, 1920.

1920. Serial No. 400,512.

rest in slots in a frame 03 carried by tubular or like members 6 clampedin place in the hole or pit at the mouth of the bore f being produced.The rear end of the cylinder has a projecting part 7 abutting against astationary member a carried by the frame aforesaid, the abutting facesbeing curved so as to permit of the rotation of the cylinder about theaxis of its trunnion. A suitable water inlet connection 2' and anexhaust connection j are provided for the hydraulic cylinder with therequired control valves thereon. The frame d may be carried centrallybetween the members e as shown in Figs. 5 to 8 instead of above the sameas illustrated in Figs. 1 to 4.

The forward end of the hydraulic cylinder a is held in place inalinement with the bore being produced by a clamp it permitting or theaccurate setting of the cylinder. Freferably, the clamp is carried bythe front end of the frame (Z supporting the hydraulic cylinder orbarrel, and is mounted so as to be capable of both horizontal andvertical adjustment movements.

The pipes which are being propelled by the hydraulic plunger are heldcentrally with relation to the plunger by a plurality of arms m pivotedupon the plunger which, when the latter is within the cylinder, projectbeyond the front end of the plunger so as to form a guide for the pipeend. When, however, the pipe is fully expelled from the hydrauliccylinder, as shown in Fig. 1, the catches m project clear of thecylinder and the lower ones can turn freely about their pivots clear ofthe pipe so permitting of the cylinder being turned about its trunnionsto clear the pipe which has been driven into the bore and to rest in anupright position as shown in dotted lines in Fig. 1, where a furtherpipe can be lowered thereinto as the lunger recedes and the water isreleased.

he dropping of the new pipe length into the vertical cylinder assists inthe rapid expulsion of the water from the cylinder.

The tubular elements 6 upon which the frame at carrying the hydrauliccylinder a rests are preferably two in number disposed in the samelongitudinal direction as the said cylinder; the rear end of the frame613 against which the hydraulic cylinder abuts, beds against the block 0upon the side of the pit, so as to take up the thrust exerted duringworking.

and 4 and may be arranged as shown in Figs. 3 and 4, or may rest upon across-piece on the members a as shown in Figs. 7 and 8. A bracket 0 withrope pulley p thereon,

, and also an anchor rod 9 for the rope 1', are

. bular elements 0.

attached to the frame and a pipe or rod 8 carrying the double ropepulley t is placed in the cylinder for operation by the hydraulicplunger. The pull exerted on the carria e d by the rope 1- is resistedby the tie-r0 s u attached to the carriage d and to a member v securedin position by the tu- With this arrangement, the one hydraulic cylinderand plunger serves both for producing the bore and for removing thepipes therefrom. The frame may be supported at a point higher than itsbase and the tie rods u and pulley bracket 0 be similarly elevated inposition.

The invention is not to be limited to any particular arrangement of thesupporting frame for the hydraulic cylinder, of the hydraulicconnections and control fittings, nor to anyparticular means for settingand adjusting the position of the cylinder to direct the pipes into thebore, as these and the other details of the improved machine may bemodified to suit any special services or re uirements.

aving now described our invention, what we claim as new and desire tosecure by Letters Patent is 1. An earth boring machine comprising aframe having means for clamping the same in a position adjacent to themouth of the bore to be produced, a second frame adjustably connected tothe first frame, a hydraulic cylinder pivotally mounted in the secondframe, and a hydraulic plunger in said cylinder.

2. An earth boring machine comprising members adapted to be clampedbetween opposite walls of the pit adjacent the mouth of the bore to beproduced, a frame carried by said members and abutting against the wallsof the pit o posite the bore, and a.

pivotally mounted ydraulic cylinder with plunger therein for propellingthe ram which produces the bore, substantially as and for the purposedescribed.

3. An earth boring machine, comprising tubular members with screwedextensions for clamping the same in the pit adjacent the mouth of thebore to be produced, a framecarried by said members and abutting againstthe wall of the pit opposite the bore, slots in said frame, a hydrauliccylinder having trunnions thereon which enter the said slots, thecylinder abutting against the said frame at its rear end and theabutting faces being curved so as to permit of the rotation of thecylinder about the axis of its trunnions, and a clamp on the frame forthe'front end of the'cylinder, substantially as described.

4. In an earth borin machine as defined by claim 1, the provision ofpivotal catch pieces upon the hydraulic plunger designed to detachablysecure a pipe to said plun er.

5. In an earth boring machine of the kind defined by claim 2,.pivotalcatch pieces provided upon the end of the plunger designed to detachablysecure the end of a pipe to said plunger.

6. .In an earth boring machine of the kind defined by claim 1, thearrangement whereby the frame, cylinder, and its plunger can be utilizedfor withdrawing pipes from a bore or for drawing pipes, cables or thelike through the latter. 1

7. In an earth borin by claim 2, means combined with said frame,cylinder and its plunger for withdrawing pipes from a bore or fordrawing pipes, cables or the like through the latter.

8. In an earth boring machine, the combination with a portable framehaving means for clamping its ends between opposite walls of a pit, asecond frame cooperating with the first frame and movable into positionssubstantially parallel to and at substantially right angles to the firstframe, a hydraulic cylinder pivotally mounted in the second frame, and aplunger mounted in said cylinder.

. 9. A combination as defined in claim 8 in which the cylinder and theplunger are arranged at substantially right angles to the first frame, apulley carried by the first frame, a pulley carried by the plunger, anda rope passing over the pulleys and having one of its ends fixed to onekof the frames.

In testimony whereof we have signed our names to this specification.

ARTHUR RIVING'ION MANGNALL.

ROY FORBES IRVING.

machine as defined

